Atomic Broadcast no longer exists. It was a very early-stage startup, with an idea about some social media filtering. (No I won't tell you more.) There was, as far as I know, only the founder, and no code written before me. Also, this was my first Rails freelancing gig! :-)
I created a tiny Rails app with one feature for them: retrieval of a user's tweets from Twitter, via the Twitter API. I did this in about four hours, in December 2011, 100% remotely, as a timeboxed "test drive" of my skills.
Technologies, techniques, tools, etc. I used there included: